CN116441871A - Treatment process in forming and processing of special-shaped inner ring - Google Patents
Treatment process in forming and processing of special-shaped inner ring Download PDFInfo
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- CN116441871A CN116441871A CN202310628419.0A CN202310628419A CN116441871A CN 116441871 A CN116441871 A CN 116441871A CN 202310628419 A CN202310628419 A CN 202310628419A CN 116441871 A CN116441871 A CN 116441871A
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- inner ring
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- shaped inner
- positioning
- annular groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention relates to a treatment process in the forming processing of a special-shaped inner ring, which comprises the following steps: 1) Coarsening; 2) And (3) carrying out solution treatment. The invention realizes clamping and processing of the special-shaped inner ring based on rough cutting, and combines solution treatment to release stress on the special-shaped inner ring, thereby effectively avoiding deformation caused by stress concentration due to over-thin one of the two convex edges, improving the yield of products, and simultaneously avoiding excessive increase of allowance due to over-wide annular groove under the processing requirements of corresponding thickness and width, and further improving the parallelism, flatness and roundness precision of the products.
Description
The application is a divisional application of a forming process for precisely machining a special-shaped inner ring, wherein the application date is 2021, 5 and 31, the application number is 202110601973.0.
Technical Field
The invention belongs to the technical field of precision machining, and particularly relates to a treatment process in special-shaped inner ring forming machining.
Background
In the field of precision machining, the final quality thereof depends mainly on the machining process, such as the machining of an inner ring of an air film, which has the following defects in the machining process:
1) The product is thin-walled and easy to deform;
2) The clamping position is not arranged, and the positioning is not easy;
3) The product can be further deformed after being placed under the influence of stress concentration.
Therefore, aiming at the processing of the product, how to realize deformation prevention, good clamping and deformation caused by stress concentration can not be realized, and the processing method has become a technical problem in the field.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a brand-new treatment process in the forming and processing of the special-shaped inner ring.
In order to solve the technical problems, the invention adopts the following technical scheme:
a treatment process in the forming processing of a special-shaped inner ring comprises the following steps:
1) Coarse processing
Firstly, cutting on the circumferential surface of the special-shaped inner ring by taking the inner wall of the special-shaped inner ring as a positioning reference or directly taking one end part of the outer diameter of the special-shaped inner ring as a positioning reference to form an annular groove-shaped opening, wherein the width w1 of the annular groove, the thickness of two convex edges formed by the annular groove are h1 and h2 respectively, and w1 is less than h 1+h2; the thickness H of the special-shaped inner ring which is not subjected to rough cutting treatment, wherein H=w1+h1+h2, and w1/H is less than 1/2, and I H1-H2I is less than or equal to 1;
2) Solution treatment of
And (5) placing the rough irregularly-shaped inner ring into a solution furnace for solution treatment.
Based on the step 1), the thickness H of the irregular inner ring which is not subjected to rough cutting treatment, the width w1 of the annular groove and the thickness of two convex edges formed by the annular groove are respectively H1 and H2, wherein h=w1+h1+h2, and w1/H is less than 1/2. The arrangement avoids the over-wide annular groove, increases the allowance and ensures the processing precision. Meanwhile, w1 is less than h1+h2, and |h1-h2| is less than or equal to 1. The thickness that sets up like this, guarantees two chimb is close, avoids one of them chimb to be too thin and the deformation that leads to, the clamping and the processing of two chimbs of being convenient for.
According to a specific and preferred aspect of the invention, in step 1), the depth of the annular groove is smaller than the allowance of the surface cutting of the profiled inner ring. The arrangement is convenient for processing the surface of the special-shaped inner ring. In some embodiments, the annular groove has a depth of 2±0.2mm.
According to a further specific and preferred aspect of the invention, in step 2), the roughened profiled inner ring is solution treated at 1100-1200 ℃. The special-shaped inner ring is arranged in such a way to release the stress on the special-shaped inner ring, so that deformation after processing is avoided. In some embodiments, the roughened profiled inner ring is solution treated at 1160±5 ℃.
According to a further specific and preferred aspect of the invention, the treatment process further comprises the steps of: 3) And cutting and positioning, namely abutting the special-shaped inner ring on the positioning platform from the groove wall at one side of the annular groove by taking the annular groove as a positioning reference. Clamping and positioning are effectively implemented, and cutting deformation is reduced.
Preferably, in the step 3), the cutting positioning includes a front end machining positioning and a rear end machining positioning, wherein the front end machining positioning is performed by the CNC lathe to prop the special-shaped inner ring against the positioning platform from the rear end face from the groove wall at one side of the annular groove; after the rear end is machined and positioned to be 180 degrees and the special-shaped inner ring is turned over, the CNC lathe backwards pushes the end face of the special-shaped inner ring which is machined from the groove wall on the other side of the annular groove against the positioning platform. To avoid machining distortion.
According to yet another specific implementation and preferred aspect of the present invention, the treatment process further comprises the treatment process further comprising the step of: 4) And (3) finish machining positioning, wherein two ends of the annular groove are used as positioning references, and the end faces of the special-shaped inner ring are abutted against each other.
Preferably, in step 4), the two ends of the annular groove are used as positioning references, and the inner wall and the corresponding outer wall of the special-shaped inner ring are finished in a mode that the end faces of the special-shaped inner ring are attached to the corresponding outer wall in a abutting mode.
Or in the step 4), the two ends of the annular groove are used as positioning references, the inner wall of the special-shaped inner ring is finished in a lamination and collision mode of the end face of the special-shaped inner ring, and then the inner wall of the special-shaped inner ring is used as positioning references, so that the outer wall of the special-shaped inner ring is finished in finish machining.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention realizes the clamping and cutting of the special-shaped inner ring by taking the annular groove as a positioning reference based on rough opening, and combines the solution treatment to release the stress on the special-shaped inner ring, thereby effectively avoiding the deformation caused by stress concentration due to the fact that one of the two convex edges is too thin, improving the yield of products, and simultaneously avoiding the increase of allowance due to the fact that the annular groove is too wide under the processing requirements of corresponding thickness and width, and further improving the parallelism, flatness and roundness precision of the products.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with the present application are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are directional or positional relationships, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
According to the forming process for the precise machining of the special-shaped inner ring, the process mainly comprises three parts, namely 1) rough cutting treatment; 2) Solution treatment; 3) Cutting machining (which includes cutting positioning and finishing positioning).
Specifically, 1), coarse processing: firstly, cutting and processing one end part of the outer diameter of the special-shaped inner ring as a positioning reference on the circumferential surface of the special-shaped inner ring to form an annular groove-shaped opening, wherein the depth of the annular groove is smaller than the allowance of the surface cutting of the special-shaped inner ring, and the depth of the annular groove is 2+/-0.2 mm. The arrangement is convenient for processing the surface of the special-shaped inner ring.
In this example, the thickness H of the irregular inner ring which is not subjected to the rough cutting treatment, the width w1 of the annular groove, and the thicknesses of two convex edges formed by the annular groove are H1 and H2 respectively, wherein h=w1+h1+h2, and w1/H is less than 1/2. The arrangement avoids the over-wide annular groove, increases the allowance and ensures the processing precision.
Meanwhile, w1 is less than h1+h2, and |h1-h2| is less than or equal to 1. The thickness that sets up like this, guarantees two chimb is close, avoids one of them chimb to be too thin and the deformation that leads to, the clamping and the processing of two chimbs of being convenient for.
2) Solution treatment: and (3) placing the rough irregular inner ring into a solution furnace, and performing solution treatment at 1160+/-5 ℃. The special-shaped inner ring is arranged in such a way to release the stress on the special-shaped inner ring, so that deformation after processing is avoided.
3) Cutting: firstly, taking an annular groove as a positioning reference, abutting the special-shaped inner ring against a positioning platform (corresponding to front end processing positioning) from the rear end surface backwards from the groove wall at one side of the annular groove by a CNC lathe, and processing the front part of the special-shaped inner ring and the front part of the annular groove at the moment; then, after the front end part of the special-shaped inner ring is machined, the special-shaped inner ring is turned 180 degrees, the end face of the special-shaped inner ring which is machined by self is abutted against a positioning platform (corresponding to rear end machining positioning) by a CNC lathe from the groove wall at the other side of the annular groove, and at the moment, the special-shaped inner ring and the front part of the annular groove after positioning are machined, namely, the cutting machining is finished in the cutting positioning.
In addition, the cutting processing also comprises finish machining, wherein the two ends of the annular groove are used as positioning references, and under the mode that the end faces of the special-shaped inner ring are attached to and abutted against each other, the finish machining of the inner wall and the corresponding outer wall of the special-shaped inner ring is respectively realized; or, during finish machining, two ends of the annular groove are used as positioning references, the end faces of the special-shaped inner ring are attached to the abutting mode, finish machining of the inner wall of the special-shaped inner ring is achieved, and then finish machining of the outer wall of the special-shaped inner ring is achieved by using the inner wall of the special-shaped inner ring as the positioning reference.
Therefore, the present embodiment has the following advantages;
1. the special-shaped inner ring is subjected to rough cutting treatment and forms the annular groove, so that the clamping of the special-shaped inner ring can be realized, deformation is avoided, the positioning and the processing are convenient, and the parallelism, the flatness and the roundness precision of a product are ensured;
2. carrying out solution treatment on the special-shaped inner ring to release stress on the special-shaped inner ring, avoiding stress concentration of the special-shaped inner ring, further avoiding deformation and improving the yield of products;
3. the clamping is simple, the positioning is accurate, the processing speed is high, and the production efficiency is improved.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The treatment process in the forming processing of the special-shaped inner ring is characterized by comprising the following steps of:
1) Coarse processing
Firstly, cutting on the circumferential surface of the special-shaped inner ring by taking the inner wall of the special-shaped inner ring as a positioning reference or directly taking one end part of the outer diameter of the special-shaped inner ring as a positioning reference to form an annular groove-shaped opening, wherein the width w1 of the annular groove, the thickness of two convex edges formed by the annular groove are h1 and h2 respectively, and w1 is less than h 1+h2; the thickness H of the special-shaped inner ring which is not subjected to rough cutting treatment, wherein H=w1+h1+h2, and w1/H is less than 1/2, and I H1-H2I is less than or equal to 1;
2) Solution treatment of
And (5) placing the rough irregularly-shaped inner ring into a solution furnace for solution treatment.
2. A treatment process in a profiled inner ring forming process according to claim 1, characterized in that in step 1) the depth of the annular groove is smaller than the allowance of the profiled inner ring surface cutting.
3. The process for forming a profiled inner ring according to claim 2, wherein in step 1), the depth of the annular groove is 2±0.2mm.
4. The process for forming a deformed inner ring according to claim 1, wherein in the step 2), the deformed inner ring after the rough cutting is subjected to solution treatment at 1100 to 1200 ℃.
5. The molding process for precision machining of a special-shaped inner ring according to claim 4, wherein: in the step 2), the special-shaped inner ring after the rough cutting is subjected to solution treatment at 1160+/-5 ℃.
6. The process for forming a profiled inner ring according to any one of claims 1 to 5, characterized in that the process further comprises the steps of: 3) And cutting and positioning, namely abutting the special-shaped inner ring on the positioning platform from the groove wall at one side of the annular groove by taking the annular groove as a positioning reference.
7. The process in the shaping process of the special-shaped inner ring according to claim 6, wherein in the step 3), the cutting positioning comprises a front end processing positioning and a rear end processing positioning, wherein the front end processing positioning is carried out by a CNC lathe to prop the special-shaped inner ring against the positioning platform from the rear end surface from the groove wall at one side of the annular groove backwards; after the rear end is machined and positioned to be 180 degrees and the special-shaped inner ring is turned over, the CNC lathe backwards pushes the end face of the special-shaped inner ring which is machined from the groove wall on the other side of the annular groove against the positioning platform.
8. The process for forming a profiled inner ring as defined in claim 6, further comprising the steps of: 4) And (3) finish machining positioning, wherein two ends of the annular groove are used as positioning references, and the end faces of the special-shaped inner ring are abutted against each other.
9. The process for forming the special-shaped inner ring according to claim 8, wherein in the step 4), the two ends of the annular groove are used as positioning references, and the finish machining of the inner wall and the corresponding outer wall of the special-shaped inner ring is performed in a mode that the end faces of the special-shaped inner ring are abutted against each other.
10. The process for forming the special-shaped inner ring according to claim 8, wherein in the step 4), the two ends of the annular groove are used as positioning references, the inner wall of the special-shaped inner ring is finished in a abutting mode of the end faces of the special-shaped inner ring, and then the inner wall of the special-shaped inner ring is used as positioning references, so that the finish machining of the outer wall of the special-shaped inner ring is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310628419.0A CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310628419.0A CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
| CN202110601973.0A CN113369809B (en) | 2021-05-31 | 2021-05-31 | Forming process for precision machining of special-shaped inner ring |
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| CN202110601973.0A Division CN113369809B (en) | 2021-05-31 | 2021-05-31 | Forming process for precision machining of special-shaped inner ring |
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| CN116441871A true CN116441871A (en) | 2023-07-18 |
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| CN202110601973.0A Active CN113369809B (en) | 2021-05-31 | 2021-05-31 | Forming process for precision machining of special-shaped inner ring |
| CN202310628419.0A Pending CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
| CN202310628424.1A Pending CN116511846A (en) | 2021-05-31 | 2021-05-31 | Forming process of special-shaped inner ring based on rough cutting treatment |
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| US7913374B2 (en) * | 2005-08-09 | 2011-03-29 | Ntn Corporation | Processing method for brake rotor-equipped wheel bearing devices |
| JP2007271045A (en) * | 2006-03-31 | 2007-10-18 | Jtekt Corp | Wheel rolling bearing device manufacturing method |
| CN101972942B (en) * | 2010-10-14 | 2013-06-05 | 上海特波电机有限公司 | One-step tool clamp for machining motor shell and using method thereof |
| CN201960377U (en) * | 2010-12-17 | 2011-09-07 | 山东济宁特力机床有限公司 | Hydraulic clamp for finish machining of motor housing |
| CN202527962U (en) * | 2012-05-03 | 2012-11-14 | 天津市隆诚泰铝业有限公司 | Tool for processing both ends of motor casing |
| CN104439284A (en) * | 2014-11-14 | 2015-03-25 | 江苏大中电机股份有限公司 | Motor case one-step turning method and clamp |
| CN105750850A (en) * | 2014-12-13 | 2016-07-13 | 重庆环德科技有限公司 | Turntable bearing machining technique |
| CN205085700U (en) * | 2015-11-04 | 2016-03-16 | 沈阳黎明航空发动机(集团)有限责任公司 | Digital control processing anchor clamps of dysmorphism silk braid |
| CN105328418B (en) * | 2015-12-04 | 2017-11-03 | 无锡易通精密机械股份有限公司 | A kind of Vehicle Processing technique of railway bearing |
| JP6689151B2 (en) * | 2016-07-19 | 2020-04-28 | 日本精工株式会社 | Cylindrical ring member manufacturing method, radial rolling bearing manufacturing method, and one-way clutch manufacturing method |
| CN109531285A (en) * | 2018-12-11 | 2019-03-29 | 贵州天马虹山轴承有限公司 | A kind of processing technology of Special-shaped bearing |
| CN111015130B (en) * | 2019-12-31 | 2021-05-18 | 江阴燎原装备制造有限公司 | Method for machining inner ring |
| CN112570986A (en) * | 2020-10-27 | 2021-03-30 | 沈阳富创精密设备股份有限公司 | Machining process of thin-wall annular part of IC (integrated circuit) equipment |
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- 2021-05-31 CN CN202110601973.0A patent/CN113369809B/en active Active
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| Publication number | Publication date |
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| CN113369809B (en) | 2023-06-20 |
| CN116511846A (en) | 2023-08-01 |
| CN113369809A (en) | 2021-09-10 |
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